Gun receiver reinforcing sleeve



June 38, 1957 b. w.- BELLOWS GUN RECEIVER REINFORCING SLEEVE Filed Feb. 9, 1956 7 NVENTOR ATTORNEY 2,795,881 GUN RECEIVER REINFORCING sLEEvE Orren W. Bellows, Wilcox, Pa.

Application February 9, 1956, Serial Flo-564,500.

1 Claim. (Cl. 42-'75) This invention relates to a gun receiver reinforcing sleeve particularly intended for-the purpose of reinforcing a gun receiver.

A further object of this invention is'to provide a gun receiver reinforcing sleeve wherein a, sleeve is provided as anattachment to be permanently, or rather securely fastened about a gun receiver to both reinforce the gun action against the possibility of' exploding when the cartridge therewithin is fired, and to provide an additional mass to take up the shock and helpabsorb the vibration resulting from firing the cartridge, thus greatly reducing the amount of vibration that may otherwise reachthe gun barrel, the reinforcing sleeve being free fromcontact with the gun barrel, and the gun barrel being secured to 'the gun receiver inthe conventional manner.

A further object of this invention is to provide a gun receiver reinforcing sleeve having amass substantially equalto or even greater than the mass of the gun receiver thereby approximately doubling the mass that is subject totheshock of the fired cartridge thus reducing the resultant vibrations that may otherwise reach the gun barrel to deflect its proper aim.

Still a furtherobject of" this invention is to provide a gun receiver reinforcing sleeve which may be snugly fitted about a gun receiver and then be securely fastened thereto, thus approximately doubling the mass of the gun receiver and greatly increasing its ability to absorb vibration resulting from firing.

Still a further object of this invention is to provide a cylindrical sleeve approximately twice the length of the gun receiver which will be securely fastened over the gun action and encompass the gun action and which will extend forward from the gun receiver a distance equal to the length of the gun action, the forwardly extending portion of the reinforcing sleeve being free from contact with the gun barrel extending therethrough to the gun receiver in the conventional manner.

Still a further object of this invention is to provide a gun receiver reinforcing sleeve which serves particularly for increasing the mass of the gun action to assist it in absorbing vibrations resulting from firing the gun, and is particularly intended for use in bench rest shooting.

A further object of this invention is to provide a sleeve to stiffen and reinforce the receiver so that it provides a stiffer support for the gun barrel, which barrel is free floating and supported on the action by its threaded connection to the action.

A further object of this invention is to provide a reinforcing sleeve for the gun receiver which sleeve is of sufficient length to completely support the scope sight, whereby the weight of the gun scope will not hinder the free vibration of the gun barrel when it is fired and thus will not change the point of impact, and in addition whereby receiver is provided with a longer bearing and has substantial support ahead of the receiver ring just as the rear of the receiver is provided with support by the receiver ring.

2,795,881 Patented June 18, 1957 F I r A further object of this invention is to incorporate the sleeve about thegun receiver and provide a cylindrical bottomfor the receiver which can be easily and perfectly bedded in the wood of the gun stock, much more perfectly than 'is'possible with the short irregular contours of the conventional action.

A further object of this invention is to provide a reinforcing and stiffening sleeve which will be at least as long as and'vwill' provide a stiffening and reinforcing massfor the entire length of the gun receiver.

With the foregoingand other objects in. view, the invention consists in the construction, combination and arrangement of parts. hereinafter described and illustrated in the accompanying drawings, in which:

Fig; 1" is aside elevational view of a gun to which this invention has been. applied.

Fig. 2 is a longitudinal sectional view through a gun action. and: the reinforcing sleeve of this invention in position thereon, on a larger scale.

Fig.3 is a sectional view through a gun receiver and the reinforcing sleeve on line 3-3 of Fig. 2.

Fig; 4 is a perspective fragmentary view of the reinforcing sleeve 0f' tl'llS invention at the gun receiver end thereof.

There is shown at 10 a rifle or gun to which the gun receiver reinforcing'sleeve 11 of this invention has been added.

Thegun or rifle 19 is generally conventional consisting of the stock 12, the gun receiver 14, the gun barrel 15, secured to the gun receiver 14 by threads 16 in the conventional manner. Extending from the gun receiver 14 is the trigger guard 17 with its cocking trigger 18 and firing trigger 2t and the gun receiver also includes the conventional gun bolt 21. Extending forwardly from the trigger guard 17 is a long strap 22 countersunk Within a forwardly extendingpillow 23 of the gun stock 12.

The gun receiver reinforcing sleeve 11 of this invention consists of a metal sleeve made preferably of high strength steel, of at least as long as and up to approximately twice the length of the gun receiver 14 as will be apparent from Fig. 2, and of a weight or mass approximately equal to or possibly somewhat in excess of the weight or mass of the gun receiver itself. The reinforcing sleeve 11 is cylindrical both internally and externally, and its internal diameter is substantially equal to the external diameter of the gun receiver 14. Gun actions of different makes differ in their sizes, and in some makes the gun receiver 14 is cylindrical and hence the sleeve may be fitted snugly thereover, while in other makes, the

gun receiver may not be exactly cylindrical in which case w it may have to be either built up or cut down to cylindrical shape so that the gun receiver sleeve 11 may be fitted thereover. After the gun action reinforcing sleeve 11 is fitted over the gun receiver 14, it is securely fastened thereto as by being sweated or soldered with lead at appropriate points so that in effect its mass is added to the mass of the gun receiver. However, it will be noted that the sleeve 11 may be at least equal to the length of the receiver, or may extend forwardly of the forward end of the gun receiver up to a distance equal to the length of the gun receiver, and that the external wall of the gun barrel 15 is spaced from and out of contact with the internal wall of the cylindrical sleeve 11.

Thus, the stiff reinforcing sleeve 11 provides a rigid support to the receiver, through the threaded barrel connection 16, to the front of the receiver ring as well as to rear.

The gun receiver end of the sleeve 11 as shown in Fig. 4 is provided with a cartridge window 24 of the shape and size corresponding to the cartridge window 25 in the gun receiver and the sleeve 11 is provided at its end with a deep notch 26 to fit about an outwardly extending ferential recess 27 permitting free movement of the gun bolt 21.

The cartridge 28 is inserted through the window 24 of sleeve 11 and window; 25 of gun receiver 14 into the end of the barrel 15 by receiverof the gun bolt'21 in a conrm fi s- 1 j: .f till 1 V 1 -After the sleeve 11 has been securely fastened to the gun receiver 14,;it is secured to-the pillow section 23 of gun stock 12 by means of stud bolts 30and33 extending through the trigger'guard strap 22 into suitable threaded apertures in the sleeve'll, some of the bolts, as 33, also extending into the gun receiver,'the head;31 of the stud bolts 30 and 33 being countersunk within the trigger strap 22. w w

A conventional scope 32 may be mounted in a-con- ,ventionalmanner to thetop of the sleeve 11 as shown in Fig. 1, but its weight is-solely on thesleeve 11. The gun barrel -15 may vibrate freely, unhinderedeither by the in connection with guns or rifles such as are used in bench rest shooting. In bench rest shooting, the gun instead of being held in the arms-against ones shoulder, is usually placed at rest on a bench and aimed at a distant target, a number of sand bags usually being provided on the bench or other support'for holding the gun steady when it is fired after it has beenproperly aimed. Obviously, the sand bags serve not only to support the gun in position but also help to absorb vibration and shock, but obviously there will be a substantial amount of vibration or shock taking place within the gun receiver in the conventional use which is not absorbed by the sand bags, thus tending to displace the position of the gun between firing. With this invention, however, the effective vibration absorbing mass is doubled in view of the fact that the mass of the sleeve is equal to the mass of the gun receiver, thus making less reaiming necessary between firings, and keeping the gun steadier in position during the firing, thus increasing the accuracy of the gun. Thus,

the gun becomes more rigid, the vibration is more readily absorbed and the results are much more satisfactory.

While the device has been shown and in structure described indetails it is obvious that this invention is not to be considered as being limited to the exact form disclosed, and that changes in details and construction may be made therein within the scope of what is claimed, without departing from the spirit,ofthisinvention.

Having thus set forth and disclosed the nature of this invention, what'is claimed i s j j j For use in combination with agun receiver, a receiver reinforcing sleeveof'approximately twice the length of the gun receiver and -of a substantial mass, said sleeve having an internal diameter substantially equal to the external diameter. of the gunreoeiver, approximately one half of said sleeve being snugly fitted about the gun receiver and securely attached thereto, the other half of said sleeve extending forwardly about the gun barrel extending from the gun .receiver, said forward sleeve half being free from c'ontact with the gun barrel, said sleeve being windowed to coincide with the gun receiver loading window andrecessed to coin cide with the path of movement-of the gun bolt, and means for securing said reinforcing sleeve in-position including a gun stock portion extending the length of said sleeve and providing a gun stock bed therefor, astrap means extending the length of said sleeve andof said' gun stock bed, said extending strap means being countersunk in said gun stock bed, stud bolt means secured through said extending countersunk strap means, said gun stock bed, and said sleeve 'atspaced points therealong, part of said stud bolt meansbeing threaded into said sleeve and part of said-bolt means threaded into said gun receiver.

References. Cited in thefile, of this, patent I UNITED. STATES PATENTS 1 2,014,184 'Linder Sept. 10, 1935 2,345,127 Kehne Mar. 28, .1944 2,520,971 Simpson Sept. 5, 1950 FOREIGN PATENTS 655,125 Great Britain July 11, 1951 

